Frangible Shell Liquid Release Component for Smoking Articles
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing smoking articles face challenges in retaining volatile flavorants during storage and providing a clear indication to consumers when the flavor is released, as current encapsulation methods either release all flavor at a specific force or provide little sensory feedback.
Innovation Solution
A smoking article incorporating a liquid release component with a sustained release mechanism, featuring a closed matrix structure of cross-linked polysaccharides and a frangible outer shell made of film-forming polymers and plasticizers, which releases flavor over a range of compressive forces, providing a novel tactile and audible sensation upon compression.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If liquid flavourants are incorporated into the filter or tobacco rod, then additional flavours are provided to the consumer, but the volatile flavourants migrate or evaporate during storage reducing the amount available during smoking
Solution Approach 1:
The flavourant is pre-encapsulated in a matrix structure before incorporation into the smoking article. This preliminary encapsulation action prevents evaporation during storage, and the capsule is designed to break upon consumer activation (smoking), releasing the flavourant at the appropriate time. This resolves the contradiction by preparing the flavourant in advance in a protected state that releases only when needed.
2Loss of substance
If capsules are used to encapsulate flavourant, then loss of volatile flavourants during storage is reduced, but the capsules break open at a particular force releasing all flavourant at once with limited consumer sensory indication
Solution Approach 1:
The outer shell of the capsule is designed with different mechanical properties than the inner core, creating local quality differences. The outer shell is formulated to be more brittle and fracture at lower forces, while the inner core contains the flavourant. This local differentiation allows the shell to break and provide sensory feedback (crackling sound and tactile sensation) while the inner core gradually releases flavourant, enhancing consumer experience.
3Duration of action of moving object
If a matrix material is used to provide flavourant, then flavourant is released gradually upon compression, but the matrix structure provides little or no indication to the consumer that the flavourant has been released
Solution Approach 1:
The invention merges two different mechanisms into a single capsule structure: a brittle outer shell that fractures to provide sensory feedback, and a sustained-release inner core matrix that gradually releases flavourant. This combination merges the immediate sensory indication function with the gradual flavour release function, resolving the contradiction between providing consumer feedback and maintaining prolonged flavour delivery.
4Ease of operation
If a frangible outer shell is added around the inner core, then a novel tactile sensation is provided upon compression, but the device complexity increases
Solution Approach 1:
The capsule is constructed as a composite material system with an outer shell made from specific polymers (such as cellulose acetate or gelatin) and plasticizers, combined with an inner core matrix material. This composite structure integrates multiple functions (protection, sensory feedback, sustained release) into a single manufacturable component, resolving the complexity issue by using material composition rather than mechanical assembly of separate parts.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution effectively retains flavorants during storage, provides a progressive and controlled release of flavor, and offers a distinct sensory experience to consumers through a crunchy and crackling effect, enhancing the smoking experience while maintaining flavor intensity.
Implementation Method 1
The frangible outer shell is broken down upon compression of the flavour release component to provide a tactile and audible sensation
Implementation Method 2
A liquid composition is trapped within the domains and is releasable from the closed matrix structure upon compression of the material
Implementation Method 3
The liquid delivery material comprises a closed matrix structure comprising a cross-linked polymer matrix defining a plurality of domains
Data Source
Figure 1
Figure 2
AI summary
A smoking article (10) incorporates a liquid release component (20), the liquid release component comprising an inner core of a sustained release liquid delivery material and a frangible outer shell encapsulating the inner core. The liquid delivery material comprises a closed matrix structure comprising a cross-linked polymer matrix defining a plurality of domains; and a liquid composition that is trapped within the domains and is releasable from the closed matrix structure upon compression of the material. The frangible outer coating comprises at least one film-forming polymer and at least one plasticiser.